Process of treating surfaces.



iULIo SPELTA, OF uENos AYRES, ARGENTINA.

PROCESS OF TREATING SURFACES.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed May 4, 1908. Serial Iblo. 430,801.

To all whom it may concern:

Be it known thatI, JULIO SPELTA, a subject of the King of Italy, residing at Buenos Ayres, Argentina, have invented new and useful Improvements in Processes of Treating Surfaces, of which the following is a specification.

This invention relates particularlyto the process of treating the hul s of ships by means of a mixture of itch, tar, sand and cement and has for its 0 ject to preserve thehull by protecting it against rust and dampness,

Heretofore the hulls of ships and vother surfaces exposed to dampness have been treated by a more or less thick and strong paint but so far as I am aware such paints eoome perforated and detached allowing moisture to enter and remain in free contact with the surface which, whether of metal or of wood Will soon corrode and suffer severe damage.

My invention consists in applying to the surface to be treated a thick and completely water tight covering of a mixture formed directly on the surface by applying to the untreated or previously treated surface, a hot mixture of six parts of pitch and one part of tar, whereupon a mixture'of two parts of sand and one part of cement is immediately s rayed. This coating is then allowed to ry without further treatment afterwards removing the surplus of sand and cement.

The proportions of the substances above stated and the details of the process may be varied slightly without deviating from the spirit of my invention.

I claim: 1; The process of treating surfaces consisting in ap lying to the surface a mixture of pitch an tar and applying to said mixture, sand and cement.

2. The process of treating surfaces consisting in applying to the surface a hot mixture of pitch and tar and spraying onto said mixture a mixture of sand and cement.

3. The process of treating surfaces consisting in applying on the surface a hot mixture composed of six parts of pitch and one part of tar and spraying onto said mixture while hot a mixture composed of two parts of sand and one part of cement.

In testimony whereof I aflix my signature in the presence of two witnesses.

JULIO SPELTA.

Witnesses:

PEDRO GARXERLB, ANTONIO L. BELLo. 

